Removable core tip



Dec. 10, 1963 A. L. HAY 3,113,743

REMOVABLE com: TIP

Filed March 10, 1959 ALEXAN DER L- HAY By W a A TTDRNM United StatesPatent ()fllice 3,113,743 Patented Dec. 10, 1963 3,113,743 REMDVABLECORE Til Alexander L. Hay, Powell River, British Columbia, Canada,assignor to Mach Kilian liloedel and Powell River Limited, a corporationof British Columbia, Canada Filed Mar. ltl, 1959, Ser. No. 793,545 8Claims. (Cl. 24268.6)

This invention relates to a removable tip for cylindrical cores, such ascores of the type used in newsprint rolls.

Newsprint is wound in large rolls on cylindrical cores ready for use onnewspaper presses. These cores are formed of paper or cardboard tightlywound into cylindrical shape. There are cores that are discarded afteruse, and Others that are provided with permanently-mounted metal tips,the latter cores with their tips being returned after use to thenewsprint producer. The tipped cores are preferred, and are in generaluse today. Tips of the type in use prior to this invention arepermanently mounted on the cores so that the cores and tips have to bestored by the newspaper people, and then shipped back to the newsprintproducers. This necessitates considerable storage space, plus the costof returning the cores. Additional expense is incurred since the coreshave to be reconditioned for use. Furthermore, such tipped cores can bere-used only a few times before they are unfit for further use.

An object of the present invention is the provision of a core tip thatmay be quickly and easily applied to the cores and removed therefrom sothat only the tips are returned to the newsprint producers.

Another object is the provision of a removable tip equal in performanceon newspaper presses to the type of tips which are permanently mountedon cores.

Another object is the provision of a removable core tip having one ormore keyways therein so shaped to fit chuck keys of standard design.

Another object is the provision of a core tip of simple andcomparatively inexpensive construction, but which is so designed toresist any crushing action to which the core on which it is mounted issubjected.

Another object is the provision of a removable core tip having one ormore keyways therein, so shaped to fit chuck keys of standard design andto reduce the tendency of slippage of the keyways in one or more slotsin the core ends regardless of methods used to drive, tension or brakenewsprint rolls of newspaper presses.

Ano her object is the provision of a removable core tip having in theend wall two slots so located to permit easy wire strap baling ofquarter and half size rolls according to standard procedures.

Another object is the provision of a removable core tip consisting of asingle tubular sleeve which is reinforced at the ends thereof in asimple and efiicient manner.

Another object is the provision of a removable core tip of die pressedconstruction thereby reducing production costs substantially below theproduction costs of the type of tips which are permanently mounted onreturnable cores.

A core tip according to the present invention consists of a singletubular sleeve having an end wall across and connected to the inner endthereof which braces the sleeve against any radial crushing action towhich it may be subjected. This end wall is formed with an elongatedslot therein through which a T-shaped key may extend. The key is formedwith a long narrow head which fits through this slot, and when the keyis turned, this head is moved across the slot so that it engages the endwall. The tip may now be quickly and easily removed from the core onwhich it is mounted. Another feature is that the sleeve is formed withan outwardly-extending flange on its outer end which preferably isradially curved in cross section. This forms a stiff brace at the outerend of the sleeve, and it engages the end of the core to limit themovement of the sleeve thereinto. One or more keyways is or are pressedoutwardly of the sleeve and extend longitudinally thereof. Each keywayopens out from the outer end of the sleeve, and it bulges outwardly fromthe outer surface of the sleeve to fit into a slot in the core in whichthe sleeve is fitted.

An example of this invention is illustrated in the accompanyingdrawings, in which,

FIGURE 1 is an elevation of the outer end of a re movable core tip,

FIGURE 2 is a cross section taken on the line 2-2 of FIGURE 1, showingthe tip inserted in a core,

FIGURE 3 is a section taken on the line 33 of FI URE 1, also showing thetip inserted in a core, and

FIGURE 4 is a perspective view of a key designed to be used with thiscore tip.

Referring to the drawings, iii is a removable core tip comprising asingle tubular sleeve 12 of a size to fit snugly into the end 13 of acylindrical core 14 such as is used in newsprint rolls. With the coresin common use, it is necessary to ream out the end thereof, as indicatedat 15, to accommodate the sleeve 12 in order that the tip will fitstandard chucks. However, the core may be made with a bore large enoughto receive the tip. Sleeve 12 has an inner end 17, and an outer end 18.An end wall 22 extends across and is connected to the inner end 17 ofthe sleeve. Although the end wall may be made separately from the sleeveand connected thereto in any convenient manner, it is preferable to formthe sleeve and wall from a single piece of suitable material by apressing operation. End wall 22 is formed with an elongated slot 24therein, and it is preferable to provide a re inforcing flange 25 at andsurrounding the slot, said flange being integrally connected to the endwall. In addition to this, slots 26 and 27 may be provided in Wall 22for the reception of baling wires when the tips are grouped for storageand shipment alone.

A flange 29 is formed on and extends outwardly in a substantially radialdirection from the outer end 18 of sleeve 12. This flange reinforces andbraces the outer sleeve end, and it is preferable radially to curve theflange in cross section, as clearly indicated at 33 in FIG URE 2. Theouter edge 31 of the flange extends substantially in the direction ofsleeve inner end 17.

At least one keyway 35 is pressed outwardly of sleeve 12 and extendslongitudinally thereof, opening out from the sleeve outer end at 36.There are preferably two opposed keyways, as shown in the drawings. Eachkeyway opens longitudinally into the sleeve as at 38, and bulgesoutwardly from the outer sleeve surface, as shown at 39 in FIGURE 3.lange 29 is cut away at 41 over the outer end of each keyway 35.

Each keyway 35 is formed with opposed side walls 44 and 45 projectingsubstantially straight out from sleeve 12, and with a back wall 46joining said side walls and extending inwardly to form an inclined innerend wall 47 for the keyway, said end wall being integrally connected tothe sleeve.

Tips 10 are applied to the ends of core 14 after the newsprint is woundthereon. Prior to this each end of the core is reamed out at 15 to thedepth of the tip in order to receive the latter. At the same time, eachend of the core is formed with slots 52 of such size and depth as toreceive keyways 35. The sleeve and its keyways fit snugly into the coreend, and usually have to be tapped into place until flange 29 bearsagainst the outer surface of core end 13. The flange limits the inwardmovement of the sleeve, and it protects the outer surface of the coreend. As this flange is curved radially in cross section, it forms astrong brace for the outer end 18 of the sleeve.

3 At the same'time, end wall 22 braces the inner end 17 of the sleeveagainst radial crushing action so that core 14 is also braced internallyby this wall.

When the newsprint roll including core 14 with tips is installed in anewspaper press, a key fits into one of the keyways 35. As walls 44 and45 of these keyways project substantially straight out from the outersurface of sleeve 12, there is no possibility of the keys jumping out ofthe keyways during operation of the press. As flange 29 is cut away at41 over each keyway, the latter may be made as deep as required.

When the core with its tips is taken off the press, the tips may beremoved and the core discarded. This is accomplished by means of a key55, see FIGURE 4, having an elongated head 56 on one end, and a handle57 on the opposite end thereof. Head 56 is made as large as possible,but is shaped to pass through slot 24 in end Wall 22. Handle 57 extendssubstantially parallel with the key head so that when the handle isturned to extend across the slot, the head also extends across saidslot, at which time said head bears against the edge of flange 25, andthe key may be drawn outwardly relative to core 14 to remove tip 1%.Flange reinforces the end wall so that it will stand up to the forcenecessary to extract the tip.

This removable core tip eliminates the necessity of storing cores,shipping them back to the newspaper producers, and the necessity ofrepairing and otherwise maintaining the cores. The special bracing ofboth ends of the tip sleeve makes it possible to use a thinner metalthan would otherwise be required. The tips themselves are continuouslyreturned to the newsprint producer for re-use.

\Vhat I claim as my invention is:

1. A removable tip for cylindrical cores such as used in newsprintrolls, comprising a single unbroken diametrically rigid tubular sleeveof a size to fit snugly into the end of a core and having inner andouter ends, an end wall completely across and connected to the inner endof the sleeve to brace the latter against any radial crushing action towhich the sleeve may be subjected, means connected to the outer end ofthe sleeve to engage the adjacent end of a core to limit the movement ofthe sleeve thereinto, and at least one keyway pressed outwardly of thesleeve extending longitudinally thereof and opening out from the sleeveouter end, said keyway longitudinally opening into the sleeve andbulging outwardly from the outer surface thereof to fit into a slot inthe core end in which the sleeve is fitted.

2. A removable core tip as claimed in claim 1 in which the limitingmeans connected to the outer end of the sleeve comprises a substantiallyunbroken flange on said end and extending outwardly therefrom insubstantially a radial direction, said flange being cut away over theouter end of each keyway formed in the sleeve, and said flange bracingthe sleeve outer end.

3. A removable core tip as claimed in claim 2 in which the flange isradially curved in cross section with the outer edge of the flangeextending substantially in the direction of the sleeve inner end.

4. A removable core tip as claimed in claim 1 in which the end wall isformed with an elongated slot therein through which a T-shaped key mayextend to remove the tip from a core.

5. A removable tip for cylindrical cores such as used in newsprintrolls, comprising a single unbroken diametrically rigid tubular sleeveof a size to fit snugly into the end of a core and having inner andouter ends, an end Wall completely across and connected to the inner endof the sleeve to brace the latter against any radial crushing action towhich the sleeve may be subjected, a substantially unbroken flangeconnected to the outer end of the sleeve and extending outwardlytherefrom in substantially a radial direction, said flange bracing thesleeve and engaging the end of a core to limit the movement of thesleeve thereinto, and a pair of keyways pressed outwardly of the sleeveextending longitudinally thereof and opening out from the sleeve outerend through the flange, said keyways longitudinally opening into thesleeve and bulging outwardly from the outer surface thereof to fit intoa slot in the core end in which the sleeve is fitted.

6. A removable core tip as claimed in claim 5 in which each keyway isformed with opposed side walls projecting substantially straight outfrom the sleeve, and with a back wall joining said side walls andextending inwardly at an end remote from the sleeve outer end to saidsleeve to which it is integrally connected.

7. A removable core tip as claimed in claim 5 in which the end wall isformed with an elongated slot therein through which a T-shaped key mayextend to remove the tip from a roll, and said wall being formed with areinforcing flange at and surrounding said slot.-

8. A removable tip for cylindrical cores such as used in newsprintrolls, comprising a single unbroken diametrically rigid tubular sleeveof a size to fit snugly into the end of a core and having inner andouter ends, an end wall completely across and connected to the inner endof the sleeve to brace the latter against any radial crushing action towhich the sleeve may be subjected, a flange formed on the outer end ofthe sleeve to engage the adjacent end of a core to limit movement of thesleeve thereinto, said flange being curved in cross section with theouter edge of the flange extending in the direction of the sleeve innerend, at least one keyway pressed outwardly of the sleeve extendinglongitudinally thereof and opening out from the sleeve outer end andthrough the flange, said keyway longitudinally opening into the sleeveand bulging outwardly from the outer surface thereof to fit into a slotin the core end in which the sleeve is fitted, and an elongated slotformed in the end wall centrally thereof through which a T-shaped keymay extend to remove the tip from a r011, said end wall being formedwith a reinforcing flange at and surrounding said slot.

References Cited in the file of this patent UNITED STATES PATENTS1,241,193 Carlino et al Sept. 25, 1917 1,919,769 Brown et al July 25,1933 2,045,035 La Rock June 23, 1936 2,049,334 Sobota July 28, 19362,269,939 Janisch Jan. 13, 1942 2,364,953 Daley Dec. 12, 1944 2,605,980Atwood et al Aug. 5, 1952 2,760,732 Bebie Aug. 28, 1956

1. A REMOVABLE TIP FOR CYLINDRICAL CORES SUCH AS USED IN NEWSPRINTROLLS, COMPRISING A SINGLE UNBROKEN DIAMETRICALLY RIGID TUBULAR SLEEVEOF A SIZE TO FIT SNUGLY INTO THE END OF A CORE AND HAVING INNER ANDOUTER ENDS, AN END WALL COMPLETELY ACROSS AND CONNECTED TO THE INNER ENDOF THE SLEEVE TO BRACE THE LATTER AGAINST ANY RADIAL CRUSHING ACTION TOWHICH THE SLEEVE MAY BE SUBJECTED, MEANS CONNECTED TO THE OUTER END OFTHE SLEEVE TO ENGAGE THE ADJACENT END OF A CORE TO LIMIT THE MOVEMENT OFTHE SLEEVE THEREINTO, AND AT LEAST ONE KEYWAY PRESSED OUTWARDLY OF THESLEEVE EXTENDING LONGITUDINALLY THEREOF AND OPENING OUT FROM THE SLEEVEOUTER END, SAID KEYWAY LONGITUDINALLY OPENING INTO THE SLEEVE ANDBULGING OUTWARDLY FROM THE OUTER SURFACE THEREOF TO FIT INTO A SLOT INTHE CORE END IN WHICH THE SLEEVE IS FITTED.